Yes, Humberto Delgado Airport is the same as LIS. "LIS" is the official three-letter IATA airport code for the primary international gateway to Lisbon, Portugal. Historically known as Portela Airport, it was officially renamed in 2016 to honor Humberto Delgado, a celebrated Portuguese air force general and politician. In 2026, it remains the busiest airport in Portugal and the 13th largest in Europe. When booking flights or looking at baggage tags, you will always see the code LIS, but signs on the ground in Lisbon will refer to it as Aeroporto Humberto Delgado. The airport is unique among major European capitals for being located just 7 kilometers from the historic city center, making it incredibly accessible by the Metro's "Red Line." Despite its name change and ongoing modernization efforts to handle over 36 million passengers, its identity in the global aviation system is firmly anchored to that single, recognizable three-letter code.